Doha Sub Aqua Club opposite Oasis hotel is good. They meet tonight at 7.30. Just show up. They give full training and it is a very friendly club. They go diving every weekend and you can rent the gear for nothing if you are training to dive.

Don't bother with the shop on Nasr Street in Al Sadd. It is expensive and has very little choice. There are three other dive shops in Doha and I can send you a map of their locations if you want.

If you need to learn Scuba and have not yet qualified don't buy anything yet. The club will advise you what you need and where to get it.

I am currently learning to dive with DSAC and really enjoy it.