Calligraphy
Perhaps you aren't keen on the idea of making leadlight windows as a hobby. Why not start with something less daunting such as calligraphy.
It is an art that you can learn from a book (of course). Once you get a bit of practice under your belt, you can do all sorts of jobs for your friends and family: wedding invitations, party invites, logos, announcements, graphic design, inscriptions, certificates, labels and annotation for maps.
The results can be really beautiful and the practising of the lettering can be therapeutic as well. COme on in and get a book to get you started.