I think you should try to get the answer to this question: why is the move i think bad? and: why is the move the computer says good?
PD: I think you should try the computer moves, and when you're more expierenced you can go on your own.
Learning by playing - stick to the main line?
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If you play the "right" move you begin to get lazy and stop seeing the whole board... play in the moment, have fun with what you learn, but trust your instincts as well.
Learn by losing...
If you just play the moves the GMs play, you don't learn anything. You're not doing anything.
kwaloffer wrote:
If you just play the moves the GMs play, you don't learn anything. You're not doing anything.
Basically the point I was making as well, I agree.
ajedrecito wrote:
I have to disagree. Understanding the move the GMs play is where a lot of the best learning can take place. Just blindly following the database will not likely lead to improvement, but if you learn why the moves are good, it will help you find good moves on your own, find plans, etc.
It's often easier to understand why the alternatives are bad, instead of why the GM move is good 
When encountering an opening for the 1st time in correspondance chess, is it best (for a beginner such as I) to stick to the main line that the GMs play?
I ask as my instinct is to play a different move, which comes in a very poor 2nd in the popularity stakes according to my database of master games. So clearly (?) it is a "bad" move.At GM level, anyway.
However, would I learn more by playing what comes naturally, possibly suffering for it, or from playing the "right" move?