The Wikipedia article on Harari language links to an Appendix 2 of the works of one 'Burton' (absent from the article itself, apparently that would be Richard Francis Burton, and the book 'First footsteps in East Africa or, An Exploration of Harar').
Unfortunately that appendix is very incomplete, and partially quite unclear.
(Several sentences seem to reference other parts that do not actually exist? Most poignantly, the reference appears insufficient to reenact the sample translations contained therein.)
The website of the city of Harar apparently contains current learning resources, but as far as I can see, those are all themselves written in Harari, thence requiring an entry level that the Appendix, I feel, cannot bootstrap.
Are more comprehensive English learning resources available?
(This is for a hobby project with the goal limited to being able to construct simple sentences/expressions with dictionary assistance and, ideally, getting a feel for what would/not sound ideomatic. "Live" utilisation in Harar or even fluency are very much out of scope.)