Ball Blue Book Strawberry Jam. This is one of my favorite canning and preserving books. Seal in clean, hot ball jars.
With over a 100 years behind them, the recipes are almost always fail proof. Let stand until thickened, about 30 minutes. Generally strawberries don't set well, and while it's possible to make a strawberry jam without commercial pectin, it's not the easiest for a beginner.
Lots of information and step by step recipes and directions so you can learn to can safely.
After the 8 hours of standing time, bring the mixture to a boil over medium heat. So don't blame yourself for that failure. This is from the ball blue book. With over a 100 years behind them, the recipes are almost always fail proof.