Since it seems impossible for many to subscribe to the EKA Foorum (go have a try here) there is a mirror on google groups here. Google translate will help for the most part.
How to get an ISIC card in Tallinn
1. Get a passport sized picture.
2. Go to the International Office at the EKA main building, fifth floor.
3. Get a letter proofing you are a student there.
4. Go to the Student Union at the Estonian Business School, second floor.
5. Get your ISIC card there. (about 6-7 Euros)
Both places are marked on the map, and easy to find.
Good luck.
Fitness and Swimming in Tallinn
Check this:
Student swimming
Mondays and Thursdays you can go to Kalev Spa from 19.30 to 21.00. You need to get a proof of studentship, the international office can issue a letter in Estonian language.
Alternative:
www.myfitness.ee
Library search site
Here is the link to the library search engine.
Finding used Bikes in Tallinn
Try these shops:
Velonaut, Telliskivi loomelinnakus, Telliskivi 60, tel 58 06 38 38
CityBike OÜ, Uus tn 33, tel 51 11 819
Veloplus , Saku tn 3, tel 65 56 977
Going out and getting around in Tallinn
Check these sites for now:
www.klubid.ee (estonian only,but google translate helps)
www.tallinn-life.com
www.inyourpocket.com
rada7.ee
kuhuminna.ee
This seems to be another interesting portal for visitors:
www.traveller.ee