I make jewellery for a living, and if your just starting out it can be boggling looking through all the different suppliers.
For good quality glass beads and plated metals findings ie headpins,capps, clasps etc try
beadservice sslrelay.com/www.beadservice.com/sess/utn;jsessionid=154be1ab507f0bc/shopdata/index.shopscri pt
they are very reasonable on their prices, great quality and great on postage, if you order before lunch, the items usually come 1st class the next day.
also
Sanctuary Beads on Ebay
stores.shop.ebay.co.uk/SANCTUARY-BEADS__W0QQ_armrsZ1
same as above for quality, service etc
also
B for beads www.b-for-beads.co.uk/store/
Tool wise - I already had my tools so haven't bought any from these. Ebay would be a good bet, although don't go mad tool buying
All you need is ;
round nose pliers
a good pair of wire cutters
half nose pliers- half round half flat
and if using crimps - a pair of them.
Happy Beading- it becomes addictive you know