[Amps] Questions from a beginner

[Eric Mynes]

Evening all,

I'm new to building amps.  So, I'll tell you want I would like to do
and see what help/ideas I could build.  I have an Icom IC-703+ radio
that will be here in a few days.  I intend on using it mobile most of
the time, but when I'm home, I'd like to use it for 20m and 40m SSB.
I no preferrence for tube nor solid state.  I have both type of rigs
and like to use each.  I know nothing about building an amp.  One that
covers 20-80m would be great.  Any suggestions or points that I should
know.

Thanks and 73,
Eric