The first thing of course is to register to vote by Tuesday 20th April. This is also the date to arrange a postal vote(if you have already registered), Tuesday 27th is the cut off date for Proxy votes.
Visit About my Vote for further details.
To find out about the prospective parliamentary candidates the following websites give useful background information:
For understanding of the issues and how to vote Promote the Vote is a site designed for adults with a learning disability.
Maggie Harnew on her Skillsworkshop blog has also highlighted
Also see my other blog entries on politics and voting