Even though illustrations from the literature would be better, bullets are used here to show the ruins of most interest to the visitor and likely to be accessible to the photographer.
References: A Topographical Dictionary of Ancient Rome (1929) by Samuel Ball Platner and Thomas Ashby; A New Topographical Dictionary of Ancient Rome (1992) by L. Richardson, Jr.; Urbs Roma (1967) by Donald R. Dudley; Roman Imperial Architecture (1981) by J. B. Ward-Perkins; Pictorial Dictionary of Ancient Rome (1968) by Ernest Nash; Urbs Roma (1967) by Donald R. Dudley. An especially thorough guide for the visitor are two guides: Rome and Environs: An Archaeological Guide (2007) by Filippo Coarelli and Rome: An Oxford Archaeological Guide (1998) by Amanda Claridge. The map is a detail from the Roma Urbs Imperatorum Aetate (1979-1984) by Francesco Scagnetti and Giuseppe Grande.