Okay, I'm just posting the main riffs of the song, you can easily figure where they go.

It starts with a Em chord, or if you prefer a E5. Then goes the main riff of Enter 
which is this one:

|------------|
|------------|
|------------|
|------------|
|-----/7-----|
|-0-0----6-5-|
  p p

And here comes the riff of Taxman, transposed to E:

|------------|
|------------|
|------------|
|------------|
|---7-----5v-|
|-0---5h7----|

During the vocals, it's two times this riff, a guitar plays two E5 while the other one 
two times the riff above and back to the start.

And the "chorus" is:

|------------|------------|------------|------------|
|------------|------------|------------|------------|
|---7-----5v-|---7-----5v-|------------|------------|
|-----5h7----|-----5h7----|---7-----5v-|------------|
|-5----------|-5----------|-----5h7----|---7-----5v-|
|------------|------------|-5----------|-0---5h7----|

There are no more riffs, listen to the song to figure what part goes where and that's all.

Have fun with Beatallica.