<p>I’m only familiar with biology and psychology, but from what I’ve experienced and seen it’s really not difficult. Labs working on hot topics in biology (cancer, stem cells) are somewhat “competitive” in that everyone wants to work there and they have their pick, but normal labs are generally extremely happy to have some extra help. </p>
<p>All it takes is for you to go online, find some labs that look interesting and e-mail the professor saying that you’re looking for a lab position and wonder if they have space for an undergrad. You’ll very frequently get a positive response. </p>
<p>I did this over winter break with 3 labs, thinking that only one or two of them would pan out - all three of them emailed back very promptly, were happy for me to visit and meet with people, and now I have to pick between 3 amazing options! </p>
<p>There are also advisors in each field who can give you more personalized advice if the above approach seems too intimidating, or if you want to talk to someone about your interests and what might be available on campus. The part of the departmental website for undergrads usually directs you to who does this. </p>
<p>There’s also a huge base of support in the life sciences in particular. Ann Georgi is a wonderfully kind woman who is the undergraduate research advisor, and who spends much of her time making it easy to get into research. There’s an annual fair where 60+ labs come and pitch to you, hoping to get you into their lab! </p>
<p>Finally, there are some student organizations that help. HCURA (harvard college undergraduate research… something? alliance?) is helpful; if you’re on their mailing list, you’ll often get ads from them about labs who want extra help.</p>
<p>Just for biology, if you’re looking into it, it’s good to keep in mind that you’re not limited to things at the College. The biology offerings of the total Harvard establishment - MGH labs, the med school, the children’s hospital, etc - are totally astounding in scope, and often labs farther away will be much happier to have an undergraduate than those on campus because fewer people are willing to commute out there. </p>
<p>Oops, that was longer than I intended… Sorry!</p>