There are hundreds and hundreds of threads on the Dorico forum now, and somebody from the Dorico team has replied to most of them, so there’s a reasonable chance that your question has already been asked and answered already. To save everybody some time, please use the search feature on the forum to see if your question has already been answered.
When you are logged in to your forum account, the search box is at the top right-hand corner of the page, in the header, and it looks like this:
By way of example, if you want to find an answer to a question about choosing the right octave in note input, think of the keywords in your query, in this case “octave” and “input”, and type them into the search box. To narrow your results, add + before each term, which means that the result must include that term: if you type octave input then the results will contain either of those terms, whereas if you type +octave +input then the search results will contain both terms.
You can also click the Advanced Search link if you want to, for example, look for replies from me specifically that use particular keywords. phpBB’s search features are documented here.