Math is Fun and Help With Fractions are two websites that offer a variety of different topics of help with fractions. Both offer lessons and explanations of how different concepts are applied to fractions.
Math is Fun offers a page with 31 links to lessons and games that have to do with fractions. The page also offers a song to help with memorizing what happens when adding, subtracting, multiplying and dividing fractions.
Help With Fractions offers suggestions on apps for Apple devices that help with fractions. There are also free worksheets that can be downloaded and free fraction calculators to help.