There are so many websites to choose from. The historical archive of Waterloo is massive. I think that there has to be an effort to "get it right" and that there is an opportunity to draw on some wonderful resource material.
Here's a generic account of the battle, and some of these pieces are worth investigating.
The historian Andrew Roberts notes that "It is a curious fact about the Battle of Waterloo that no one is absolutely certain when it actually began". Wellington recorded in his dispatches that at "about ten o'clock [Napoleon] commenced a furious attack upon our post at Hougoumont". Other sources state that the attack began around 11:30. The house and its immediate environs were defended by four light companies of Guards, and the wood and park by Hanoverian Jäger and the 1/2nd Nassau. The initial attack by Bauduin's brigade emptied the wood and park, but was driven back by heavy British artillery fire, and cost Bauduin his life. As the British guns were distracted by a duel with French artillery, a second attack by Soye's brigade and what had been Bauduin's succeeded in reaching the north gate of the house. Some French troops managed to enter its courtyard before the gate was resecured. The 2nd Coldstream Guards and 2/3rd Foot Guards then arrived and repulsed the attack.
Fighting continued around Hougoumont all afternoon. Its surroundings were heavily invested by French light infantry, and coordinated attacks were made against the troops behind Hougoumont. Wellington's army defended the house and the hollow way running north from it. In the afternoon, Napoleon personally ordered the house to be shelled to set it on fire,.
Seeing the flames, Wellington sent a note to the house's commander stating that he must hold his position whatever the cost, resulting in the destruction of all but the chapel. Du Plat's brigade of the King's German Legion was brought forward to defend the hollow way, which they had to do without senior officers. They were then relieved by the 71st Foot, a British infantry regiment. Adam's brigade was further reinforced byHugh Halkett's 3rd Hanoverian Brigade, and successfully repulsed further infantry and cavalry attacks sent by Reille, and Hougoumont held out until the end of the battle.Of course, seeing it up close would be better.