Here are the links to some of the best pro-EU sites and other related matters
https://www.hopenothate.org.uk
https://www.britainforeurope.org
https://www.manchesterforeurope.org
http://www.europeanmovement.co.uk
https://www.theneweuropean.co.uk/home
https://www.makevotesmatter.org.uk,
https://www.electoral-reform.org.uk
Richard Wilson’s Q&A on where we are now http://www.bremaininspain.com/bremainers-ask/bremainers-ask-richard-wilson/
British in Europe explanation of the Withdrawal Agreement here: http://www.bremaininspain.com/news/how-the-wa-affects-you/.