The game practically walks you through the game, throwing in more units to
build as the Adventure mode progresses. This type of hand holding is obnoxious
in most other videogames, but done well enough that an online guide is
superfluous. Only the most vexxing problems are covered in this file.

You ebgin by placing a Sunflower or Sun-shroom. These units generate the
resource the game refers to as Sun (in this file, SUn Points). Using Sun
points, you may build other units capable of attack.

The other resource would be money. This is used to purchase permanent
upgrades, such as more unit slots, enhanced units, and extra game modes. Money

is secondary, although you will earn some simply from playing mini-games, etc.

Plant a row of pots near the bottom headed up by a bulb of Garlic. Plant all Sunflowers behind the Garlic and then you have more columns available for more firepower.
If you can get to a flat part of the roof, don't be afraid to use Threepeaters and Torchwood to add to your cabbage-launching offense.
Jalapenos are your friends on rooftops.

Let's take a look at this guide to become the best player in Plants vs Zombies!