B.C.
It's totally normal and it's just what kids his age do.
Most kids write a few characters and/or numbers backwards up to about 2nd grade.
This is totally nothing to worry about.
As for the reading - the best thing you can do is to read with him, make games of it, have him pick out the same word through the whole story, etc.
Make it fun!
Reading is something else that seems to take off round about the 2nd half of 2nd grade.
In the mean time give him things to do that will help his small motor control (build his finger/wrist/arm muscles).
Playdough, finger painting, lacing cards, threading beads, cutting out shapes from construction paper with safety scissors, coloring with crayons, etc - all these activities will help him with his writing.
He's fine!