The following two websites contain sets of summary notes you can use. There are also lots of exam style questions to practice and also the mark schemes to go with them. 

Remember you are doing Edexcel Biology B. 

The summary notes and also a list of definitions from Physics and Maths Tutor are also included in the menus on the left (under the relevant topic). More notes will be added as time goes on....they will be under the relevent Topics. 

There are LOADS of revision questions on Study Mind as well.