In any airplane, crosswind takeoffs and landings are things to be prepared for and to practice. In a tailwheel airplane, this is even more important, which is why crosswind landings are one of the things that the FAA specifically mentions in the regulations regarding tailwheel endorsements.

The video in the link below contains a great discussion of crosswind techniques in a tailwheel airplane as well as many other fundamentals of flying tailwheel.

Doug Rozendaal goes over the fundamentals of tailwheel flying and explains how proficiency in crosswind landings can be achieved.

0:00​ Start
1:39​ Center of Gravity
5:27​ Wheel landing vs. 3-point landing
11:51​ Crosswind
19:51​ Left turning tendencies