Have you explored the resources available on the TES website? There is section for teaching assistants.
You can find it here: TES for TAs
You can search and browse for resources in lots of areas such as behaviour support, supporting SEN, reading and phonics. Resources can be searched by topics – two are listed above but there are many more. You can add your own reviews of resources to share with your colleagues. You can also follow on Twitter – @tes_TAs.
Evaluating resources and strategies that you use can involve you in thinking reflectively about learning and the factors that have an effect on learning.