Here's a Memrise course for the alphabet. Once you become familiar with the individual letters, try your hand at reading some of the Word Walls. It'll be slow going at first, but eventually you'll come to recognize the more common words.

I found the runes very easy to learn once I got the pattern down. A lot of runes look similar while others look different, for example, J is like no other while Ur and O are similar. What I do is have a sheet of the runes pre-made, I look at a wall, make a dovahzul sentance, transcribe it to runes on paper. A few days later I come back to it and transcribe it. I know there is a pattern, think of a one letter rune made of three shapes and a 2 letter rune made of four, there is a tic-tac-toe grid, using long, short, and medium L's (and orientation) and dots. Just put the dots and L's in their box, for example, H is a dot in top left box, upside down medium L in top middle to center box, then a long L in the 3rd (rightmost) column. After not a lot of practise and a lot of crumpled paper, I know almost all the runes. Darned J.