Not trying to toot my own horn here, for starters.
I like to be very generous with my money....but I prefer not to give it away for free. I am, however, more than happy to give new players the opportunities to work for it.
I try to hire escorts whenever possible (even if I know they're noobs and have no chance of actually protecting my ship against a pirate), or use them as scouts.
I've made my PoB open dock to nearly all lawfuls (except Gallia) and Quasi-lawfuls, and I accept a high amount of goods so that folks are interested in trading. I also try to tech players what is good to bring and where to get it.
The best way to help noobs feel welcome is to TEACH them how to play the game and help them EARN money. Not to arbitrarily throw money at them and hope that they stop pestering you.