Hi unknown
Learn about erogenous zones on a woman, and then use just anything handy and soft to initiate masturbation. No vigorous moves here, no inserting objects inside vagina - unless you wish to loose your virginity. Learn to stop when it hurts. You maybe tempted to go for a virogous method, but you may bruise yourself. Girls usually spend time in the shower and masturbate safely. Running a water jet over erogenous zones is another.
As for your boyfriend, google search for foreplay - an act where both partners can excite the other into preparedness for sex. Cuddling up, patting, kissing are some - please remember there no such thing as a standard woman - each woman has her own erogenous zones which work best for her. Educate your boyfriend on what "turns you ON". Penetrative sex may ONLY be attempted when you are well lubricated below - the wet feeling inside vagina. Good luck