Coolant Leak 99 continental

Ok so i have this 99 continental and i had a front bearing go about 8 months ago. i let it sit well i used my other car for a good 6 months till i finally got around to getting it fixed. So when i got my car back i noticed that it was leaking coolant from around the res. tank cap (a lot once the engine was warmed up with the ac on) so i let it cool off then opened the cap and turned the engine on and let it warm up cause i thought there was air in the system which i think there was cause the coolant level kept going up and down significantly till all the bubbles stopped gurgling up, so i turned it off and let it cool down filled it to the cold fill line put the cap back on and it hasnt leaked since from the cap but i discovered a leak from somewhere around the crankshaft pulley. so what do i do next?