".가능하다면 어떤방법으로 신청해야하는지"-- u can call'em up by dialing 1-866-333-4606 or 1-800-300-5616
and then perhaps u can order an application form,The DE 1101 I, from the dept. i guess.
"또 급여의 몇% 가 얼마동안 지급되는지"--If u claom just regular Unemployment benefits, these claims are based on ur wages earned from ur employers on ur W-2 form covered by the California Unemployment Insurance Benefit Code and paid from the Unemployment benefit fund. The claim is based on California wages paid in specific quarters. So please contact an agent!
"지금 파트타임 일하고 있는것이 영향은 엄는지 (W-2 로 얼마간의 페이를 처음 받았습니다)...--Yes, It does. U may work part-time as u do now and be eligible to receive unemployment benefits. The Department will subtract $25 or 25% (whichever is greater) from the reported wages. The remaining amount is subtracted from ur weekly benefit.
만약 신청하게 된다면 그전 회사에도 연락이 가고.." Yes, for instance, Ur initial eligibility for benefits is based on the reason ur employment ended with the very last employer for whom he/she worked. The last employer that u worked for prior to filing ur new unemployment claim, will be mailed a Notice of Unemployment Insurance Claim Filed, DE 1101CZ.
So good luck~~~~~~~~~~