LM PayPal is a module that allows the administrator to set up a variety of payment types for access to nodes or payable upgrades to different user roles as a subscription service.
Like any module, the first step to using it is to go to "Administer > Site building > Modules" and enable to module. LM PayPal has four components to it, the core "LM PayPal" which is needed by all the others, then components to enable donations, paying for access to node and subscription services. You can enable all four, or, just the ones you really plan to use. No external modules are needed to support this module, they are completely self contained.

Following enabling the module, the administrator has to go to user permissions at "Administer > User management > Permissions" and give the appropriate access and administration permissions to the proper users. If necessary create a new role for such administration permissions and assign these permissions to a user
Access for the administration tools of LM PayPal is found at "Administer > Site configuration > LM PayPal". From here you have complete control over configuring LM PayPal to work with your account and setting up product and service purchases to offer for sale at your web site.
The following pages will detail how to use each service as time permits to write them, likewise, there is help documentation within the module itself that you can use for further help.
Note: Once this module is enabled, some LM PayPal links appear in the navigation menu. It is advisable to turn these menu link off until complete configuration of the module has been completed and it's ready for use. These can be disabled by going to "Administer > Site building > Menus > Navigation" and unchecking the "Enabled" checkbox for each of those menu items.
This is the initial step to take to get the module working for you. Here you supple the email address of your web site's PayPal account, along with other configurations.
As you can see in the image to the right, it's a simple bit of information, and the defaults are an acceptable use of the module, meaning all you have to do is enter the account's email address, submit the configuration and move on. However, in the interest of more complete information, we will explain the others.