Not to bad
1) Pull upper intake
2) Take off valve covers
3) Remove Rocker Arms
4) Pull out pushrods
5) Pull bottom intake
6) Spyder
7) Pull lifters while rotating motor...
It is a rather easy job to do, but can be overwhelming for a beginner. You have to be certain when disconnecting things to remember where they go, etc. If you've got medium mechanical ability, there's no reason that you can't do it.