CHAT: Three questions from a lurker

Hi all list people.  I am generally a lurker, but I have to ask: am I the
youngest conlanger on this list?  I'm 16 and have made five languages.
Right now I'm working on one based on Welsh.  Oh, and I have another two
questions, because somehow I didn't get the responses the first time.
How do you decide on your vocabularies/morphemes?  And what computer
program do you use.  I use Excel myself because of the ease of
alphabetizing.
Well, I'll go back to lurking.  Thanks a lot.
David

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