Welcome.
Tips? Well, photography is a bit like learning to play the piano - practice, practice, practice! Try to join a local photo club - there's nothing like seeing lots of different kinds of work to allow you to see where you can improve. Take classes, workshops, courses - few things are as effective as watching (and trying to duplicate) a master photographer. Read books - tons of good stuff available. But, start with the basics (equivalent of playing the scales on the piano): aperture control (depth-of-field, selective focus), shutter control (freeze/blur options), ISO boosting (at what point do you get excessive noise)... Do you know your hand-held limit for each lens? Do you know the dynamic range of your camera? Do you know how to spot-meter a scene and figure out the optimal manual exposure? Can you change the exposure compensation without taking your eye from the eyepiece? What's the closest focus for each lens? etc., etc. etc.
I'm a newbie too - and there are lots of really good people here, I'm discovering...