TT Holstebro is qualified because they're certain to end up as top 2 in Denmark.
Current standings in many of the national league can be found at the top left here at handball123.com (Handball News in yellow). Also there are threads for some of the bigger leagues.
The rankings for season 13-14:
#1 Denmark
#2 Hungary
#3 Russia
#4 Spain
#5 Norway
#6 Romania
#7 Germany
#...
The top 2 teams of all these national competitions goes to CL, where the first place is directly qualified and the second placed team gets to CL qualification. This means if TTH defeats FCM in the danish championship final, TTH will be directly qualified, and if they lose, they'll have to play qualifications for CL, iIRC.
Nations ranking eight to twenty four gets one contender in CL, some directly qualified for group stage, others have to play the qualification tournament. I'm uncertain how the 3x4=12 teams directly qualified for group stage is decided because this season Serbia (12) ranked higher than Croatia (13), yet Podravka was directly qualified for group stage and Zajecar wasn't (Sävehof was directly qualified too, despite Sweden only placed as 19). Just guessing here, but
IF it's due to the club's individual performance, it can be seen that Podravka had a higher performance score than Zajecar this season as well as the following one:
http://www.eurotopteams.com/handball/femmehand.php.
IF this club score is deciding, then Hypo and Podravka, despite Austria and Croatia only being ranked 13 and 18 respectively, are both likely to go directly to the CL group stage. But there's also the matter that this season, France and Spain lost spots, and therefore it might be that in the following season both Hypo and Podravka will participate in the qualification tournament. I honestly don't know.
The teams qualified from their respective tournaments will probably (not certain about the specific rules for each league, if there's a "slutspil", etc.) be:
FCM
group stage or
qual (Denmark)
TT Holstebro
group stage or
qual (Denmark)
Györ
group stage (Hungary)
FTC Budapest
qual (Hungary)
Dinamo Volgograd
group stage (Russia)
Rostov Don / Zvezda Zvenigorod
qual (Russia)
Due to bad economy in Spain I am not certain if these teams will decide to participate, but currently Bera Bera is in the lead ahead of Elche-Mustand and Gran Canaria (Spain)
Larvik HK
group stage (Norway)
Byaasen T
qual (Norway)
Oltchim Valcea
group stage (Romania)
Baia Mare (?)
qual (Romania)
Thüringer HC
group stage (Germany)
Leipzig
qual (Germany)
Metz M
group stage (France)
Buducnost Podgorica
group stage (Montenegro)
Krim Ljubljana
group stage (Slovenia)
Zajecar
group stage or
qual (Serbia)
You tell me:
http://personel.thf.gov.tr/BilgiBankasi.aspx?Personel=PuanDurumu group stage or
qual (Turkey) ((Ranked #12))
Hypo N
group stage or
qual (Austria)
SPR Lublin qual (Poland)
Sävehof
group stage or
qual (Sweden)
VOC Amsterdam qual (Netherlands)
ZRK Varder Skopje
qual (Makedonia)
Podravka V
group stage or
qual (Croatia)
HC Smart
qual (Urkaine)
Ormi Patra???
qual (Greece)
Madeira SAD???
qual (Portugal)
Sassari???
qual (Italy)
LC Brühl???
qual (Switzerland)
BNTU Minsk???
qual (Belarus)
We can be pretty confident the following teams are directly qualified for group stage:
FCM / TTH
Györ
Volgograd
Bera Bera / Elche / Canaria (if they participate)
Larvik HK
Oltchim Valcea
Thüringer HC / Leipzig
Metz / Fleury / Issy
Buducnost
Krim
For the last two spots it'll be two of these five, I believe: Zajecar, Turkish #1, Hypo, Podravka, or Sävehof.
Then there might be a wild card group as well, that's if some teams doesn't participate, such as the spanish teams, or teams from lower ranked nations, which can't afford it or don't have sufficient facilities to play CL. The only team in the list I wrote which I do not recognize as previously having played CL is Minsk, all the other teams I'm pretty confident can manage to have the facilities required as they've participated in CL before or are a club of a certain size and wealth.
Source:
http://cms.eurohandball.com/PortalData/1/Resources/1_ehf_main/Placedistribution1314_WOMEN.pdfSince you took the stand points from TTH, I think I'll add a little more.
TT Holstebro will most likely play qualification for CL (though they might as well get directly qualified), and then it's interesting to wonder about what teams are best to avoid.
I'm not certain how the seedings are formed, so without regard to seed, the following teams will probably be best avoided in the qualification to CL process:
FTC Budapest, Rostov Don / Zvezda Z, Hypo N, ZRK Varder (?), Podravka V.
Obviously TT Holstebro can't be in the same seed with all those five teams as there are only 4 teams in each seed. TTH have however in their 3 seasons in Europe manage to qualify for 2 finals, one which they might win. Further more they're the second best team of the currently highest ranked league. As such, I believe TT Holstebro might be seeded with the highest ranked teams. These will probably be FTC Budapest, and Hypo and Podravka if they have to play qualifications for CL and aren't directly qualified. It might as well be Rostov Don as Russia have gone up the league ranking list. In that case, Holstebro will probably not have that many teams they absolutely must avoid, though it's tough to tell, and would be nice if someone with more knowledge could add.
Finally I think it should be noted that Viborg were seed low two seasons ago, because they entered on a wild card in stead of a team with a lower seeding. As such Viborg got said seeding and had to play Rostov Don and Cluj, whereas RHK with a high seeding had to play Amsterdam and Sävehof, iIRC.