安装风帆。 调整船头方向从一定倾角入风。 调前帆。 Trim the mainsail. Let ou4. 调主帆。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
Secure the bottom front (tack) of the mainsail and jib to their respective shackles on the boom and the bow of the boat.  There will be a small line (outhaul) attaching the rear corner of the mainsail (clew) to the end of the boom. Pull it so the foot of the main is taut, and cleat. This helps the mainsail have a smooth shape for the air flowing over it. Hoist the mainsail by pulling down on its halyard until it stops. It will be flapping around (luffing) like crazy, but that's OK for a short pe