There should be a step-by-step guide to show novice traders how to create a trading strategy. Are there off-the-shelf strategies that are available for your use? Are there any fees involved or are they offered for free? Can you modify the off the shelf strategies?
Note that firms should not guarantee you a certain return. The best firms will have long and short stock trading strategies available at no charge and will allow the stock trader to create their own. Some firms will even allow you to copy strategies from a "friends" list. One size does not fit all. If the company doesn't tell you the details of the strategy or why they selected or recommend a certain stock, then it's not advisable to use it. You may be overpaying for "proprietary" services and may be able to obtain free stock market tips and recommendations online that will perform comparably.
At CoolTrade, there is no fee for any strategy. Many CoolTrade automated trading software users have generously offered the strategies that they developed for public use. You can use the strategies as is or you can modify them any way you like. Of course, you can develop your own strategies from scratch. Most users test any strategy they run in the simulator mode for a period of time before going live with real funds.