Fight with spam is never ending. Every day you get tonnes of spam. But here are some antispam tools and techniques that can help you with this fight.
Some email clients has some spam protection features included (so maybe look in free email clients section and choose a better one), but even if your favorite client doesn't, there is no need to worry, there are standalone antispam tools or plugins that you can use ... that really helps with filtering out and deleting the unwanted spam.
Another good idea is not to use your primary email everywhere and for example when filling out online form, get a 1 week temporary email.
And maybe you you'll have to change your email-address ... for example Gmail account has really good spam protection.