Hi Gemma a welcome to Purrs. to answer your questions in order ....
1) how old can they leave there moms? Ideally they would not leave their mothers until they are at least 8 weeks old and preferably older. It is not just mothers milk they get from their mom's but also a lot of training on what it is to be a cat. So leaving earlier tends to lock them into babyish behaviour and they don't have a chance to learn all there is that a cat needs to know.
2)when can i let him outside - he should not be outside until he is fully vaccinated and neutered. Most vets recommend neutering at around 6 months so you have a ways to go yet. I let mine out before he was neutered and he went walkabout over night which caused me no end of stress. It also meant that he was at risk from car accidents and disease if he got into fights with more mature toms over the lady-friends he was presumably pursuing
3)when do i get his injections done? - can't remember but someone else can fill you in on that one
4) can he be a "indoor" cat? YES!!! There is no reason why a cat can not be an indoor cat as long as you provide him with lots of 'enrichment'. That is to say, climbing towers and toys and all sorts of wonderful options that you will find if you pursue even a tenth of the more recent threads here. You can also have you back garden cat-proofed if you have a permanent home and the funds to pay for it. This allows the cat to go outside but to be restricted to your garden which keeps him safe.
All very good questions, and welcome once again to the site...
Thanks.
[/quote]