Hey and welcome to Dream Views...
Anyway,I would suggest you start with DILD or MILD...
The question of how long it will take you is unexplainable...
You will soon realize that everyone is different...
Some people wait for a few months for their first Lucid Dream...
There are some naturals who do it in 2-3 days...
It took me around 8 to get to my first Lucid Dream...
The fastest is probably DILD...

Oh,I'd suggest you focus on one technique ( eg. DILD )...
After you've had a few LDs,you can move on to other techniques if you wish...
Figure out which one works best for you...^^

Hope that helped...
If you have any questions,feel free to ask or PM me..
Sam