For fishing on the river....
You are best to start off using a block end feeder......
Drennan oval blockend swim feeder - TackleShop.co.uk
You put the feeder on your line first and then stop it with one of these......
Drennan leger stops - TackleShop.co.uk
Tie a loop on the end of the line and then attach your hooklength to it. You can buy hooklengths already made up....
Kamasan b611 hook to nylon - TackleShop.co.uk
You'll be able to buy tackle the same and similar to the above from your local shop.
I would suggest buying a pack of size 16 and 14. Start fishing with the 16.
Fill the feeder with maggots and put 2 or 3 maggots on the hook.
The links provided in the posts above show how to cast and tie loops.
When you start fishing, for the first hour or so keep casting regular, <5 minutes, to build up some bait in the swim.