1. Open your inventory. (Click on the button in the lower right corner of the browser.)
2. Across the top menubar of the Inventory window, click on CREATE. Go down the pop-up menu to "New Note".
3. A blank note window will appear. NOTICE that in your inventory, there will be selected an item with the name "New Note". If you move quickly, you can type in the name you want while it is still selected. Otherwise ...
4. Name your note: Right-click on the "New Note" item listing. From the pop-up menu, select RENAME. Type the desired name. Hit return. If you make a typo, repeat this process.
5. Edit your note: You can type into the note editing window, or you can drag certain types of items from your inventory into the note editing window. Most common types of items to be included in a note are Landmarks, Snapshots and Textures, although you can include Objects (small ones, please), Garments and other Notecards! Basically, you can stuff just about any SL object or item into a notecard. Suggestion: you could use this to organize and store items in your inventory that you don't need often.
6. SAVE OFTEN!!!!!! The Save button is at the bottom of the note editing window. NOTE: Sometimes if you don't save every couple lines, Second Life will choke, and refuse to save your notecard. If you think you might have not saved recently enough, you might want to copy your text from the notecard to an outside text editor before attempting save, to protect against losing your work. Please note, you cannot copy objects, landmarks, images, or other non-textual information.