Understand where you are coming from when you say if the BB needs attention take it to you're local LBS.. But l thought l would give it a go first and see if l'm capable of doing this job..
l have took the pedals off and cleaned and grease the threads and put them back on but the squeaking is still there

So l have now taken a plastic cover off the crankarm (Not chainside) and undone a 15mm bolt that holds the crankarm to the BB axle but the crankarm will not come off.. l've tryed levering and hammer on the crankarm to get it off but it will not budge..
l want to get the crankarm off so l can undo the cover that holds the BB in so l can grease it, any suggestions how l can get the crankarm off and the cover on the bottom brackets.