I found quite comprehensive instructions here in the
AXI Flight Guide. But I have to say, it is a bit daunting if I have to spend many hours learning and practicing thargoid combat only to be able to reach the Titan. Thargoid combat is not my thing, but I want to participate in this CG.
There is a lot of exposition about meta builds and methods for optimal outcomes, etc, however a ship that has caustic sinks, heatsinks, lots of HRP and some MRP, the neutraliser for the pulse, an ax torpedo and ax missile launchers, gets the job done. There is just a fair amount happening all at once which is what makes it overwhelming initially.
Krait Mk II is pretty tanky for this, but people run all sorts of ships; if the goal is to just get on the CG board for the modules, then any damage to the core counts, so almost any ship will do.
In simplest terms, outfit ship, set weapon groups for heatsink and caustic sink, another for the torps and missiles, then when ready, head to Sol and drop in at the titan.
Boost straight ahead (ignore the marker it's misleading), keep boosting towards the middle of the cloud (you will be pointing to it when you drop in).
When you hear the titan, 4 pips to sys (and keep boosting) once you hear and then
see the blue wave heading towards you switch to the neutraliser weapon group and hold it down until the wave passes. It will take several seconds so hold until it does. If your ship gets toasty, fire off a heat sink.
Once it passes, return to boosting straight towards the center of the cloud (you'll see it glow red as you get close) and switch back to the caustic sinks to use as they fill. After what seems like an eternity (in reality it's ~3 minutes when boosting from the start of the cloud) you'll reach the asteroid field. You'll know as the caustic build up will stop and there will be rocks present (the spiky things are mines, do not cuddle mines, do not drive into them, zero stars).
You'll be reasonably safe once at that point. From there, I honestly recommend taking a couple minutes to just chill out, and to watch the titan. You'll hear it make noises, and you'll see the vents opening every few minutes. This will help with working out where the vents are on the titan, what is therefore 'up' and 'down' respectively, what the timing is, etc.
When ready, switch to the torp and missile group; edge a little closer, and when the titan vents open, boost towards it, target the closest once in range, and fire a torp. It will track on it's own, so once sent, boost towards the next vent (recommend going clockwise, so towards the left, then around) and repeat.
As you make your way from vent to vent a notification will appear; boost down around the side of the titan until you see a very bright spiky core appear (affectionately referred to as the pineapple). Get close enough to target it, fire missiles this time (not torps), keep firing until you hear the titan roar and the pineapple starts moving up; point straight down again, and boost 2-3 times. You can then spin around, watch the blue lightning and revel at your first successful bombing run.
Or like me, do that, laugh nervously and try to overcome a mild panic attack. xD
Either way, you'll be recorded for the CG and likely have some bonds to show for it.
At that point, you can either bail, or take another crack at it, by heading back up parallel with old man titan, and repeat. Alternatively, you can put the titan directly to your back and boost away. Keep boosting, and when the wave is sent out, let it carry you out.