"pick up a few tricks" is a correct and commonly used phrase in written English. It means to learn or acquire new skills or techniques. Example: "I enrolled in a cooking class to pick up a few tricks in the kitchen."
And to pick up a few tricks of the trade.
Pick up a few tricks from the pros by registering at one of the training centres in town.
But as the British Empire once occupied a quarter of the world's area, it managed to pick up a few tricks in the kitchen.
You figure things out and pick up a few tricks from other cruisers that make a voyage easier and more enjoyable.
I've been dyeing my hair red for 12 years, and I've managed to pick up a few tricks: I know exactly what to say to get the right shade ("copper tones, not purple") and I've strategized how to reduce the damage for my single-process dye job (only color the roots and use a glaze on the ends).
I was 15 years old and terrified that I'd be incapable of ever being able to pleasure a guy, so I decided to try to pick up a few tricks from a clearly feminist DVD entitled All You Need to Know to Satisfy a Man.
After a four-hour course, even a hopeless cook has picked up a few tricks.
As the personnel changed, we played around Scotland and picked up a few tricks with sequencers, samplers and drum machines.
Which isn't to say that The Hunger Games hasn't picked up a few tricks from its fanged forebear.
Along the way, he has picked up a few tricks for antique-hunting as well as an item or two for his own home.
Raised by Mrs. Sucksby as her own, Sue picks up a few tricks from a crooked locksmith, old Mr. Ibbs: blackening and greasing bad coins to make them look real; shining up stolen gems with vinegar; unstitching the initials from purloined handkerchiefs.
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union