Just a few tips:
Build your hopes but level your expectations.
Always keep the reader in mind as you write.
Give information in bite size chunks with supporting media.
(Preview often to assure this before you submit your Hub for publication).
Always proofread your work or better still ask someone who will give you an honest opinion to look through it.
Don't expect bucks to roll in. Rather build your hubs to entertain, inform or amuse. If your readership builds up progressively then it may be possible to niche it and then you may be able to earn reasonable money from it.