I write technical instructions for software, and I've found that creating a "format" or "style" is an important step in the writing process. What I would recommend here is that you have a specific style for the different content types.
You mentioned several content types:
- Practical Advice
- Dealing With Problems
I would start there and I'd create a standard format and tone for each of these types of content, so all "Practical Advice" articles follow the same format and have the same tone. This helps readers know what to expect and know what kind of information they expect to get, depending on the article type.
As was mentioned earlier, it is very important to do audience analysis to make sure you understand your audience. If you are new to the idea, it can be helpful to create 'personas' for your different audience types. You describe the characteristics of the person and you give them a name. For example:
Susan is a single adult between the ages of 21 and 45. She travels extensively, usually 2 to 3 times per year. She loves outdoor activities and has hiked Machu Pichu and all the highest mountain peaks in the lower 48 states. She has visited 60% of National Parks, but prefers state-side travel to international travel.
That is just a silly example, but it illustrates the idea. Now as you are writing each section, you can think to yourself "What information would Susan be interested in? How can I present it in a way that will be helpful for her?