Just my 2-cents here. As far back as i can remember, Ive had "hit& run" precognitive visions, without use of trance. No tools. Sometimes it's something where I can intervene but mostly not. All I can reasonably do is extend a blessing thru prayer. I have a choice of whether or not to share info and the receiver has the same choice of whether or not to heed. A few visions have saved my arse from harm & for which I'm grateful.
I'd had a ouija board as a toy since I was a kid. I "get it" now as my mom's use of reverse psychology by making it a game/toy to normalize the disruptive after effects of the pre cogs. it took me years to figure that out because nothing paranormal was ever
discussed in our family.
I think in terms of GIGO: garbage in, garbage out. Attitude in approaching the Ouija or the Tarot is vital to how much we allow it to impact us. We control our attitude. As any witch knows, attitude and intent shape events.
OK so all that aside, consider why you choose these tools & what you want from them. How intimidated (or detached) do you feel about using them? Just being aware of this helps clear your head. It seems to me that if we set up all sorts of protections then we are setting up our minds to expect there is "some thing" to be protected from. Again, this goes with attitude.
In personal experience, I'm a total wash out at card reading. All I can suggest is to find a deck with pictures that activate your imagination. Sleep with them under your pillow at night & carry them with you during the day. This imprints your psychic energy signature into the deck. Shuffle and handle them daily for a month just to get to know them. Then follow the guide book that comes with them. Keep a tarot journal.
Re: ouija board - i'd never done anything at all to cleanse or prep my Board nor said any prayers. If it concerns you then do so. I never viewed it as anything supernatural. I stored it in a dresser drawer in the box it came in and toted it off to college when dorm-mates expressed an interest. It takes 3 people for comfort: 2 operators & a note-taker (& a spirit of course) although anyone can improvise & work alone with a voice-activated tape recorder to serve as scribe.
Our dorm group used it for entertainment at our week end gatherings. We followed a simple protocol of asking first if someone wished to speak: yes or no. Then asked for a name. No name, no play. Every time we'd change places as operators we'd repeat this. It just seemed logical. We asked about the supposed spirit's history & about what they wanted to talk about &'their interests. We did not ask for guidance or divinations. Sometimes we got that anyhow at the "spirit's" whim. We never had a negative Entity. Our questions never once were concerned about negative beings. We were simply not interested in them The only scary event was the phone ringing that sent us screeching out of the room & colliding like Stooges in the doorway. So we were intense about it but could laugh at ourselves. We had a couple of "regulars" who always had some story to share. It was thru the board visits that I'd met my spirit guide, who I already "knew" from years of dream OOB traveling. That's another story. We didn't know these terms yet.
We were total NewBs. We did nothing to prep ahead of time. We had no knowledge of grounding, centering or light trance. These are things I'd suggest today, 50 years later in hind sight, but we weren't witches either. We did meditate occasionally. Nothing special.
Was this the ideal method or is such navigation by the seat of the pants recommended? No. It's just the way it was for us. Use common sense & behave yourself. Don't, for example, take a ouija board to visit a known paranormal hot spot like Skin Walker Ranch.